Jawabanmu

Jawaban paling cerdas!
2014-08-31T18:07:22+07:00
Dik : F1 = 70
F2 = 60
F3 = 50
resultan = 15
dit: F4 ?

jawab:
Resultan = 15
(70 + 60) - (50+ F4) = 15
130 - 50 - f4 = 15
80 - f4 = 15
-f4 = 15-80
- f4 = - 65
f4 = 65
1 5 1
2014-08-31T18:08:14+07:00
F4+F3-(F1+F2)=R
F4+80-(70+60)=15
F4=15-80+130
F4=65N